Ophthalmic mounting



April 9, 1929. F. A. STEVENS OPHTHALMIC MOUNTING ,Filed Feb. 19, 1925 2 Sheets-Sheet 1.

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OPHTHALMI C MOUNTING Filed Feb- 19, 1923 2 Sheets-Sheet 2 Patented Apr. 9, 1929.

UNITED STATES PATENT OFFICE. I

FREDERICK A. STEVENS, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO BAUSOH AND LOMB YORK, A CORPORATION OF NEW YORK.

OPTICAL COMPANY, OF ROCHESTER, NEW

OPHTHALMIC MOUNTING.

Application filed February 19, 1923. Serial No. 619,331.

The present invention relates to ophthalmic "-iountings, and more particularly to eyeinountings of the type in which the lens rims are split at the point of juncture with the bridge.

An object of the invention is to provide improved means for preventing relative movement of the ends ofthe split rim and in the ease of eyeglass mountings, of the guards and the bridge, thereby eliminating he danger of chipping the lenses, and of listurbing the relative adjustment of the uards and the bridge.

T the attainment of this and other object as will appear from the following lesc; iption, taken in connection with the aci panying drawings, the invention conof the improved ophthalmic mounting hereinafter described, illustrated in the drawings and defined in the appended claims.

In the drawings, Fig. 1 is a fragmentary view of an ophthalmic mounting illustrating a preferred embodiment of the invention: Fig. 2 is a sectional view, taken upon the line 22 of Fig. 1, looking in the direction of the arrows; Fig. 3 is a fragmentaryperspective view of a preferred guard; Fig. i is a section, taken upon the line l4 of Fig. 2, looking in the direction of the arrows; Figs. 5 and 6 are views of modifications; Fig. 7 is a section taken upon the line 7-7 of Fig. 6, looking in the direction of the arrows; Fig. 8 is a view of another modification; Fig. 9 is a section taken upon the line 9-9 of Fig. 8, looking in the direction of the arrows; Fig. 10 is a view Of a further modification; and Figs. 11, 12 and .13 are perspective views of parts shown in Fig. 10. A

The invention is illustrated in its preferred form in Figs. 1 to 4 as embodied in an eyeglass mounting comprising a split rim 2 for a lens 4. The end pieces 6 and 8 of the rim are provided with alined polygonal openings 10 and 12. A. polygonal member 14 is adapted to enter the openings 10 and 12 to prevent relative movement of the end pieces. The possibility of chipping the lenses by reason of such movement is thus eliminated. The openings 10 and 12 are preferably square and the member 14, therefore, is preferably of square cross section. The member 14 is shown in Fig. 3 as an integral projection upon a guard 16, so that the guard thus serves to prevent relative movement, not only of the end pieces, but of the guard itself, as well. As the bridge 18 is shown rigid or integral with one of the end pieces, as the end piece 8, relative movement of the guard and the ln'idge is thus prevented by the guard. The relative adjustment of the guard with respect to the bridge is therefore not subject to the disturbances inherent in present-day eyeglasses in which such relative movement is not prevented. The projection 14 is provided with a screwthreaded opening 20 adapted to receive a screw 22 for securing together the end pieces and the guard.

In Fig. 5, a feature of the invention is shown in connection with a guardlesss mounting. Here the end piece 6 is shown integrally provided with a polygonal projection 2st that extends into the polygonal opening 12 of the end piece 8. The screw 22 is threaded into a threaded opening 20 that is provided in the pr0jection2el, and thus holds the end pieces 6 and 8 together. Relative movement of the end pieces is prevented by the polygonal projection 24.

In Figs. 6 and 7, a feature of the invention is shown in connection with a temple endpiece construction; temple end pieces being shown at 26 and 28. An interiorly threaded, polygonal projection may be provided upon one of the end pieces, as the end piece 26, cooperating with the screw 22 to hold the end pieces 26 and 28 together and to prevent their relative movement. The polygonal projection 30 may be integral with the end piece 26, as illustrated, in Fig. 5, or may be separate therefrom, as shown in Figs. 1 to t. A. separate projection is illustrated in Figs. 6 and 7.

A separate polygonal projection 30 is shown also in the modification illustrated in Figs. 8 and 9, in which the bridge 18 is shown detached from the rim and provided with an end piece 82 that is mounted between the end pieces 6 and 8 of the rim 2. The separate polygonal projection 30 extends through the polygonal openings 10 and 12 of the end pieces 6 and 8, and also through a polygonal opening 341 in the bridge end piece 32. In this modification, the guard 16 is shown integral with the bridge.

In Figs. 1, 5 and 8, the bridge 18 is shown bent abruptly to enter a recess 38 in the end of the end piece 6. The bridge 18 engages the walls of the recess 38, helping to lock the bridge and the end pieces against re.ative pivotal movement. In Figs. 8 and 9, the end of the end piece 32 of the separate bridge is shown provided also with a recess he walls of which are shaped to lock against a correspondingly shaped shoulder 42 that is provided upon the rim 2. The polygonal shape of the projection 30 and of the openings in which it is mounted may be made round in this modification if it is desired to rely wholly upon the holding action of the walls of the recess 38 on the bridge, or of the recess 40 on the shoulder 42.

A separable bridge is shown also in Figs. 10 to 13, but combined with a spring-pro. ed guard 44. The polygonal projection 30 is replaced by post 46, the lower polygonal portion of which extends through the po onal openings 10, 34 and 12 in'the end pi res and the bridge, and the upper cylindricrl post of which serves as a bearing for the guard 44. The guard 44 is mounted in po sition about the bearing portion between the end. piece 6 and the head 48 of the post 46, and is actuated by the customary spring 50. The construction is otherwise the same as in Figs. 8 and 9, except that, the separable bridge 52 being of a. different type, it is not shown locked in place in a recess 38, as in Figs. 8' and 9. The recess 40 and the shoulder 42 are, however, employed with the polygonal recess 34 to help lock the parts together.

The invention is obviously applicable to.

many different types of mountings. The mounting forming the subject matter of Pat- .guard having a portion adapted to .c

ent No. 1,293,232, February 4, 1919, is illustrated in Figs. 1, 4 and 5; A different type of construction is shown in Figs. 6 to 13. V g

It will be understood that the invention is not restrictedjto the exact embodiments thereei that are herein illustrated and described, and that modifications may he made therein without departing from its spirit and scope as defined in the appended claims. What is claimed is: v I

1. An eyeglass mounting having, in combination a split lens rim the ends of which are provided with polygonal openii a guard having polygonal projection adapted to enter the openings to prevent relati -ie lateral movement of the or", H o

one of the ends of the rim; and means 9. ed to engage the otherend ot the rim and cooperating with the guard to prevent senaration of the ends of the rim.

2. Aneyeglass mounting having, in eonr bination, a split lens rim having end pieces provided with alined, square openings a bridge, a guard having a projection of square cross section adapted to ent r the openings to prevent relative lateral in ment of the ends of the rim and f the guard and the bridge said projection being provided with a screw-threzuled opening, and screw adapted to be screwed into the smurthreaded opening to secure the ends of rim and the guard together.

In testimony thereof, 1 have hereunto ubscribed my name this 16th day efFebrua. 1923.

FREDERICK A. STE ELS. 

